drain (drayn)

In medicine, to remove fluid as it collects; or, a tube or wick-like device used to remove fluid from a body cavity, wound, or infected area.

Source: The National Cancer Institute's Dictionary of Cancer Terms(http://www.cancer.gov/dictionary)

sensitivity (SEN-sih-TIH-vih-tee)

When referring to a medical test, sensitivity refers to the percentage of people who test positive for a specific disease among a group of people who have the disease. No test has 100% sensitivity because some people who have the disease will test negative for it (false negatives).

Source: The National Cancer Institute's Dictionary of Cancer Terms(http://www.cancer.gov/dictionary)